'equally-separated' originates from the combination of 'equal' and 'separate', where 'equal' comes from Latin 'aequalis' meaning 'even, level' and 'separate' from Latin 'separatus', past participle of 'separare' meaning 'to divide'.

'equal' changed from the Old French word 'equal' and 'separate' from the Old French 'separer', eventually forming the modern English term 'equally-separated'.

Initially, 'equal' meant 'even or level', and 'separate' meant 'to divide', evolving into the current meaning of 'divided in equal parts'.